This was my original post in m.p.w.b. Since I now think my problem is
hardware, namely my PSU, I am continuing my thread here.

I am, and have been for some time, running XP SP3. Have had no
trouble until now. It is on a M3A78_CM mobo with a AMD Phenom 9950
Quad cpu and 4GB DDR2.

I find that it freezes up after being on sometimes an hour, sometimes
longer, requiring re-powering up. I have tried the RAM one at a time,
and I have changed hard drives. Same result.

So I figure it is the CPU or MOBO.


The machine now sits dead - with only a C hard drive. Its mobo has
special power connections, which I cannot match with the few PSUs I
have in the closet. The connections are the normal power plug plus
two square connectors one that is beside the main power connector. the
other a connector elsewhere on the mobo. I have a PSU that has the
normal connector plus one square. I find that it fires up the cpu fan
fine (progress!) but I get no video and no beep or beeps whatsoever,

So, my question is - should I buy a replacement PSU with the correct
connectors?

Thanks


Duke